Home / 3,507.09-4,839.80-1,935.20

Finding the Fourth Proportional to 3,507.09, 4,839.80 and 1,935.20

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Solution

The fourth proportional to 3,507.09, 4,839.80 and 1,935.20 is: 2,670.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,507.09 : 4,839.80 = 1,935.20 : x
  2. Step 2: Convert to fraction form
    3,507.09/4,839.80 = 1,935.20/x
  3. Step 3: Cross multiply
    3,507.09x = 4,839.80 × 1,935.20
  4. Step 4: Simplify right side
    3,507.09x = 9,365,947.09
  5. Step 5: Solve for x
    x = 9,365,947.09/3,507.09
  6. Step 6: Final answer
    x = 2,670.58

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.